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Rendering with a transparent decal

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Rendering with a transparent decal

Hi Community,

i try to add a decal with big letters on my part. For this i have made a transparent .png file.

Unfortunatelly I am not able to make this decal really transparent, because i must choose a colour.

Please see attached picture and I hope you will understand.

Thanks a lot for your help.

Andreas

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Creo Parametric 2.0 | ARX Renderextension

renderproblem2.jpg

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Rendering with a transparent decal

You use the image editor in Creo to set the alpha channel.

It is highly criptic but it does work if you guess correctly.

It is best to make the transparent color either fully black or fully white.

The file is saved as .TX4 to tell the renderer it is a 32bit file (w/alpha channel) IIRC.

16 REPLIES 16

Re: Rendering with a transparent decal

Previous question went unanswered: http://communities.ptc.com/message/192346#192346

Photoshop for the win.

Re: Rendering with a transparent decal

You use the image editor in Creo to set the alpha channel.

It is highly criptic but it does work if you guess correctly.

It is best to make the transparent color either fully black or fully white.

The file is saved as .TX4 to tell the renderer it is a 32bit file (w/alpha channel) IIRC.

Re: Rendering with a transparent decal

Re: Rendering with a transparent decal

In WF5/Creo-Elements it is under Tools/Image Editor, next to Appearance Manager.

Re: Rendering with a transparent decal

Creo 2.0 has made the editor more accessible: Upper right in the ribbon.

transparent_decal.png

Re: Rendering with a transparent decal

Makes you wonder what happened with .TX2, doesn't it

Welcome to the forum, Andreas.

Re: Rendering with a transparent decal

For those not in on the joke, TX1 = 1 byte/pixel for a bump-map, TX3 = 3 bytes (RGB)/pixel for color, and TX 4 = 4 bytes (RGBA) for color + alpha/pixel. Not much uses 2 bytes/pixel, esp PTC, so no TX2, though some tools handle 3 floating point values per pixel, if your HDR needs are strong enough.

At least you got your wish for the Image tool button to be near the rendering tools.

Re: Rendering with a transparent decal

Now that makes sense.

Re: Rendering with a transparent decal

Hi Everybody,

thanks a lot, this was all really helpful. Finaly it works, but it was not easy. Much more complicated than in Solidworks.

A few things i want tell you.

- The alpha channel settings are hard to understand. To eliminate the white backround i have sucsess with these settings:

einstellungen_alpha.JPG

- Because I have a few surfaces in brushed metal without logo and one surface with logo I just copy the color "brushed metal" and add only to this copy the decal. So my Part now has 2 different brushed metal colors, one for normal surfaces and one for the logo surface.

I am sure, for this problem exist better solutions, right?

Have a good day and greetings from Germany

Andreas